[LG Optimus 4X HD] tobixdev:
Hiya everyone. This type of thread isn't new to XDA as it's on almost every device fora, but I decided to bring it over here aswell.

This Post is origanally from HTC One X Forum. All credits go to Goku80.

I'm going to share the most useful applications to have on a LG Optimus 4X HD and would like you to share your must have apps. If an app gets mentioned by numerous people, that isn't on this list, I'll be sure to add it.

Rooted apps Section

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SuperSU - SuperSU is the Superuser access management tool of the future. *ROOT*

ROM Toolbox Pro - ROM Toolbox combines apps like Titanium Backup, Root Explorer, ROM Manager and others. A must-have root app *ROOT*

AdAway - AdAway is an open source ad blocker for Android. *ROOT*

Rom Manager - Must have app for any root user. Make backups, flash ROMs, and own your device. ROM Manager is THE MUST HAVE APP for any Android root user.

System Tuner - The most complete system tuner and manager for all your phones and tablets!

BetterBatteryStats - With BetterBatteryStats you can analyse the behavior of your phone, find applications causing the phone to drain battery while it is supposed to be asleep and measure the effect of corrective actions. Guys you can also find this app if you search on XDA..

Titanium Backup - EXTREMELY powerful tool. Backup ALL apps, Market links, remove bloatware & MORE! ☆Needs ROOT, Android 1.5-4.1+

ZDBox - ZDbox is an amazing and free all-in-one toolbox. It holds a collection of useful tools and has a nice and easy to use interface. With ZDbox you’re getting your mobile/cell phone under control, do easily some optimization and customize it to your needs.

Appextractor - AppExtractor is a tool which will allow you to restore individual applications, data, SMS, and MMS messages from your ROM Manager backups.

Orbot:Tor on Android - Orbot is the official port of Tor to Android. Tor is a network of virtual tunnels that allows people and groups to improve their privacy and security on the Internet. STANDARD/NO ROOT - Works best with Firefox Mobile+ProxyMob Add-on - Works with Orbot-enabled apps like Gibberbot (secure chat) and Orweb

CPU Sleeper Quad Core - Since we have Quad Core CPUs, we have a CPU 0 and a CPU1/2/3, core 0,1,2,3 while the screen is off we really only need to have 1 core active "CPU0", this App will make sure CPU 1/2/3 shuts off while the screen is off, then resumes normal usage when the screen comes back on.(You need to pay for this app)

General Must have Apps for LG Optimus 4x HD

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Power Toggles - This is simply the best toggle app around. Able to toggle lots of main features.

Picsay Pro - This is a brilliant photo editor, but limited compared to some others. My personal favourite.

Rotation Locker - It locks your screen to either Portrait or Landscape. Really useful on some apps.

XDA App ICS Blue Colours/Themed - Our favourite forum app but with a complete red or blue colour theme thanks to our own Whiskey103

Memory Usage - Lists all current apps and tells you current memory usage, peak memory usage and priorities.

Desktop Visualizer - Makes shortcuts or widgets using a custom image and can be used to make custom icons.

Neutron Music Player - Neutron is a professional music player with amazing high quality. Great for audiophiles.

AirDroid - For moving files between your PC and phone using WIFI

Tasker - The best app of its kind. It does almost anything

MXPlayer - MXPlayer is one of the best apps for viewing movies.

Photo Timeline - Lets you create a time elapsed sequence of anything you want with your camera and then play as a slideshow

Home Switcher - Switches between any Home Launchers you have on your device.

PicSpeed Wallpapers - Over 170,000 HD wallpapers of all different genres, for our device.

Solid Explorer - Solid Explorer is a file manager which with two independent panels is the most attractive, eye catching and intuitive file manager for the Android.

QuickPic - An alternate photo gallery app, incase you don't like the default

Aldiko Book Reader - Read and download thousands of eBooks right on your Android phone or tablet. Download one of the best Android eBook Readers now!

Dropbox - Dropbox is a free service that lets you bring all your photos, docs, and videos anywhere.

ES File Explorer- ES File Explorer is a free, featured all-in-one file manager & application manager & task killer & cloud storage client & ftp client & samba client which explores the pictures, music, video, document & other files on your phone and your computer.

TeamViewer for Remote Control - Remotely control your computer with TeamViewer Free while you are on the road! Mobile and flexible: remotely access computers from your android device!

ProCapture - Capture photos and panoramas like a pro with the ProCapture camera app. ProCapture adds advanced features to the Android camera experience. Multiple advanced camera shooting modes supported: Timer, Burst, Reduced Noise, Wide Shot and Panorama.

Unified Remote - Easily the most feature-filled Android-PC remote. Turns your Android device into a WiFi or Bluetooth universal remote control for your Windows PC. Control your favorite programs, mouse, and keyboard.

Whatsapp Messenger - WhatsApp Messenger is a smartphone messenger available for Android. Switch from SMS to WhatsApp to send and receive messages, pictures, audio notes, and video messages.

AireTalk - Aire is a new communication app loaded with features that lets you talk to your friends and family in more ways than ever! Use Aire to make calls to any Aire user with voice or video for free!

Astro File Manager - It's like Windows Explorer or Mac’s Finder for your phone or tablet and allows you to easily browse and organize all of your pictures, music, videos and documents. It also gives you the ability to stop processes that burn battery life and backup your apps in case you lose or change phones.

SketchBook Mobile - Autodesk SketchBook® Mobile is a professional-grade paint and drawing application offering a full set of sketching tools and a streamlined and intuitive user interface.

TeamViewer QuickSupport - Remotely control your Samsung mobile device with original Samsung firmware from your computer with the free TeamViewer QuickSupport app! Now you can provide remote technical support to colleagues, friends, and family who need assistance with their Samsung mobile device.

AfterFocus - Bring DSLR-like Photography to Your Smartphone

Appy Geek - Appy Geek brings you all the leading tech news sources from the industry in a cleverly laid-out user interface, including TechRadar, Gizmodo, T3 Magazine, The Next Web and more... Staying at the cutting edge of innovation has never been so easy!

VLC for Android Beta - VLC media player is a free and open source cross-platform multimedia player that plays most multimedia files as well as discs, devices, and network streaming protocols. This is a BETA version of the port of VLC media player to the Android™ platform. It is intended for power users and hackers. This version is not perfectly stable and is slower than the final version.

Tapatalk Forum App - The only and the best fully functional forum app in the Market, endorsed by over 35,000 of forums worldwide.

Machinima - Machinima is the premier online network providing entertainment for the gaming culture, showing game trailers, gameplay videos and tips, video game reviews, first looks, and original series created in video games. One of the most viewed YouTube channels in the world!

SmartTools - Measure length, angle, distance, height, direction and sound with your phone.

Smart Tools is a complete package of 5 app sets. It includes 5 Pro sets for a total of 15 tools. In a word, All-in-One.

News Republic - NEWS REPUBLIC features more content than ever including articles and opinions from major players right alongside specialist experts - including ITN, Press Association, Tech Radar, The Sports Review, WENN, HitFix, The Next Web, AFP... More content sources are added regularly with more top names already on the horizon for the future.

CPU Spy - This is a simple app to display the time the CPU spends in each frequency state. This can be a useful tool in diagnosing battery problems or tweaking your over-clock settings.

JellyBean Keyboard - Android Jelly Bean Keyboard from Android 4.1 ported to work on your device. Alternative android keyboard that has Swiftkey like next word prediction. Now includes split keyboard for thumb typing!

Avast! Mobile Security - Full-featured, best/top-rated Android antivirus & security app

DroidWall - Allows you to restrict which apps can access the network. This is the perfect solution if you don't have an unlimited data plan, or just wants to see your battery lasting longer. For advanced users, it also allows you to manually define custom iptables rules.

GO SMS Pro - GO SMS PRO brings you cool UI, fast and convenient SMS/MMS experience. GO SMS Pro is the most popular messaging app; Very powerful, Cool, Funny, Safe, Fully customizable; Well support SMS/MMS + GO Chat(free message) + Walkie Talkie(free voice).*

Plume for Twitter - Plume is a beautiful and completely customizable Twitter app that will revolutionize the way you use Twitter! Brought to you by the authors of the popular Beautiful Widgets, Plume is one of the best Twitter clients for Android! (Plume was formerly known as Touiteur)

BetterBatteryStats - With BetterBatteryStats you can analyse the behavior of your phone, find applications causing the phone to drain battery while it is supposed to be asleep and measure the effect of corrective actions. Guys you can also find this app if you search on XDA..

GTA Radio - GTA Radio is a free way to listen to all radio stations of famous game Grand Theft Auto from every corner of the earth.

K-9 Mail - K-9 Mail is an open-source e-mail client with search, IMAP push email, multi-folder sync, flagging, filing, signatures, bcc-self, PGP, mail on SD & more!

Goal.com - Goal.com offers local coverage of all the latest developments including breaking news, exclusive interviews, transfer gossip, live commentary and much more. Whatever and wherever the story is, Goal.com offers the most comprehensive and expert coverage of the major domestic leagues and competitions, as well as all the major international tournaments

Aqua Mail - Easy automatic setup for popular email services (Yahoo, Hotmail, Gmail, and more).

Android Lost Free - Lost your android? We will help you find it. See http://www.androidlost.com. Remotely control your Android phone from the internet or by SMS.

Chomp SMS - chomp SMS is a souped-up replacement to the stock android Messaging app with a heap more features.

FilePush - FilePush lets you transfer files to your Android device with only two clicks.

SD Maid Pro - A maid for your android, to regain precious memory and keep it clean & tidy. For rooted devices

Fast File Transfer - The app uses Wi-Fi Tethering for establishing a connection between the devices but does not need the Internet. Fast File Transfer is an alternative for Bluetooth file sending.

LiveScore - This application comes directly from LiveScore Ltd., the leaders and inventors of real-time delivery of live sport data and owners of the no.1 ranked football / soccer web site globally... I use it and i love it and it is ten times better than the Sky Sports Football Center app.. Must have for all footy fans

Google Googles - Search by taking a picture: point your mobile phone camera at a painting, a famous landmark, a barcode or QR code, a product, a storefront, or a popular image. If Goggles finds it in its database, it will provide you with useful information. Goggles also works as a barcode / QR code scanner.

Zinio - Download the Zinio for Android app and read top magazines from around the world instantly. Zinio is the premier app for magazines on Android, giving readers immediate access to thousands of global titles.

Screen Filter - Applies a shade that acts as a dimmer to ensure your eyes don't hurt. Far more powerful than Android's built-in brightness setting.

Headset Button Controller - Headset Button Controller is very configurable, allowing you to play music, change tracks, adjust volume, answer phone calls, start Voice Command and many other things, just by clicking the button on your headset. Paid app but worth the money

MD5Checker - This application allows the user to compare the MD5 checksum between two files or alternatively between a file and a value entered manually. When loading a .md5, it will read its content and put it in the field instead of calculating the hash.

Speedy Uploader for Facebook - Uploads pics in an instant, after compressing them. Great stuff.

Fast Reboot - Simulates a reboot by closing/restarting all core and user processes and thus frees up memory. Your phone should be much snappier after using Fast Reboot.

Falcon Pro for Twitter - Falcon Pro brings the Ultimate Twitter Experience to your Android Phone and Tablet.

Trial Xtreme 3 - Trial Xtreme 3, will take your breath away with its new innovations and amazing features. Tackle 76 completely original courses, fighting your friends for the race, win while carefully controlling your bike to ensure that you don’t fall victim to one of the many hundreds of mines, water pipes, or wrecked cars that are standing in your way. Great game and highly recommended and it is free:D

Temple Run - Need i say more

Subway Surfers - I like this game. Very fun and great graphics to.

Instagram - Share your photos in a simple photo stream with friends to see - and follow your friends' photos with the click of a single button. Every day you open up Instagram, you'll see new photos from your closest friends, and creative people from around the world.

Viber: Free Calls & Messaging - Viber allows you to call, text, and send photos worldwide for free.

MovieTube: Free full Movies - MovieTube is a missing channel on YouTube for Free Full Length Movies. It manages free movies in 14 languages including: English, French, German, Spanish, Portuguese, Italian, Russian, Korean, Japanese, Chinese, Hindi, Arabic, Thai and Malay movies.

Amazon Mobile for Android - The Amazon Mobile app allows customers to browse and shop by department, search, compare prices, find deals, read reviews and make a purchase right from their mobile device.

IMDb Movies & TV - Does what it says on the tin;)..No need for further introduction..Must have specially if you are a movie fan

Netflix - Netflix is the world’s leading subscription service for watching TV episodes and movies on your phone.

Temple Run 2 - Sequel to the best game around in my eyes..Must have

Jorte Calendar - For personal use or for business, Jorte will assist you to manage your daily schedule thoroughly.

Cerberus Anti Theft - Cerberus is a complete anti-theft application, the best protection you can get to recover your misplaced, lost or stolen Android device

BubbleUPnP - BubbleUPnP is a full featured UPnP/DLNA Control Point, UPnP Media Renderer and UPnP Media Server. Play easily your music, videos and images on your phone and devices on your network (DLNA TVs, XBMC, WMP, ...), from your external UPnP Media Servers.

Chrome - No need for any introduction here

ColorNote - Color Note is a simple notepad app. It gives you a quick and simple notepad editing experience when you write notes, memo, email, message, shopping list and to do list.

Messaging + Google Voice - Stock Messaging Application with Google Voice capabilities.

Sliding Messaging - Easily manage text messages in a new and up to date format compliant with the Android design guidelines and visually based on the stock messaging app from Google, with added features. Get Pro for more features though and show support to dev

LINE: Free Calls & Messages - LINE is a new communication app which allows you to make FREE voice calls and send FREE messages whenever and wherever you are, 24 hours a day

Sygic: GPS Navigation - High quality TomTom maps stored on your Android (no internet connection needed!) together with a robust set of navigation features help you drive with confidence.

gReader - gReader is an unofficial Google Reader client for Android. Read all your RSS/Feed news in one place with Google Reader, where keeping up with your favorite websites is as easy as checking your email.

GSam Battery Monitor - Does what it says on the tin...Read the description in the link to find out what exactly it does..But this is the best battery monitor app out there...Link for FAQ here regarding the app

Many thanks goes out to KidCarter93 for allowing me to share his thread here to...

On a side note more apps will be added in the coming days so stay tuned for more goodies..Will be adding more apps that i use as well and find useful and just like my other thread wanna compile the most used apps on your handset.

IF YOU'VE FOUND THIS POST, OR ANY OF THESE APPS USEFUL, INSTEAD OF POSTING THANKS, JUST USE THE BUTTON!

If there are any apps that you feel shouldn't be in this list, please let me know and suggest a better one. I can then test it and maybe add it to the list, in place of the other one.

If you don't suggest a better app, I won't change anything.